TTGO ESP32-S WiFi Wireless Module Development Board TF Card Slot with Type-C Connector, ESP32-S

Hardware specifications.
1. Chipset: expressif-esp32-s2
2. Flash: 4 MB
3. Static SRAM: 8 MB
4. SRAM: 520 KB SRAM
5. Buttons: Power switch, base, start, custom
6. External device: TF card
7. USB to TTL: CH340C
8. Modular interface: SD card, UART, SPI, I2C, PWM, I2S, ADC
9. Vehicle clock: 32.768khz crystal oscillator
10. Working voltage: 2.7V to 3.6V
11. Operating temperature range: -40 degrees Celsius ~ +85 degrees Celsius
12. Dimensions: 63 x 30 x 6.6 mm
13. Weight: 7g

Power Specifications
1. Power input: USB 5V/1A
2. Charging current: 500mA
3. Battery input: 3.7-4.2V
4. JST Connector: 2 Pin 1.25mm
5. USB: USB Type-C

Wifi
1. Standard: FCC / CE-RED / IC / TELEC / KCC / SRRC / NCC (ESP32 chip)
2. Protocol: 802.11 B/G/N (802.11n, speed up to 150Mbps, A-MPDU and A-MSDU Aggregation, support 0.4US protection interval
3. Frequency range: 2.4Ghz~2.5GHz (2400m`2483.5m)
4. Transmit power: 22DBM
5. Communication distance: 300m